Thanks for the pic, interesting frame you got there.
I decided to move my "house" battery
to under the sink, on top of the axle
from under the left dinette seat. Seemed too much weight behind the axle. We'll see how it all balances when I'm done. Between the hot water heater and AC, I'm adding about the same weight as the battery
to the other side, so I think it's good placement. 10% or so weight gain from those 3 items. But over the axle or just behind it.
I think my new front woodwork is a bit heavier than what it's replacing. I had hoped to reduce weight, but I just kept reinforcing things! I think you could destroy the trailer and the woodwork would stay intact! So while disappointed I'm not loosing weight with the new woodwork, there may be advantages of a bit more weight up there! All told, I'm probably adding 200lbs with my remodel.